Bring the milk, butter and vanilla to the boil and remove from the heat. Sift the flour and the sugar together into the milk mixture. Add the eggs to the batter. Leave the batter to cool and add the rum. Leave the batter in the fridge for at least 8 hours. Spray the cannelé moulds liberally with non-stick spray. Bake at 270’C for 5 min and then turn the oven down to 180’C for 30 min.
Photograph: Frances Zwiers